10 Works

Central Administration of Agouti-Related Peptide Increases Food Intake in Japanese Quail

Tyler Lindskoog, Mark Bohler, Elizabeth R. Gilbert & Mark A. Cline
Agouti-related peptide is a 132-amino acid peptide associated with stimulating food intake in birds and mammals. The aim of the present study was to investigate the effect of AgRP in seven-day old Japanese quail. In Experiment 1, we tested 0.25, 0.5 and 1.0 nmol AgRP and found no effect on food or water intake over a three-hour period. In Experiment 2, we tested 0.25, 0.5 and 1.0 nmol AgRP and found no effect on food...

Remote Detection of Disturbance from Motorized Vehicle Use in Appalachian Wetlands

Walter H. Smith
Wetland disturbance from motorized vehicle use is a growing concern across the Appalachian coalfields of southwestern Virginia and portions of adjacent states, particularly as both extractive industries and outdoor recreation development expand in regional communities. However, few attempts have been made in this region or elsewhere to adapt approaches that can assist researchers and land managers in remotely identifying and monitoring wetland habitats disturbed by motorized vehicle use. A comparative analysis of wetlands impacted and...

The Effect of Storm Events on Diet of Adult Mummichogs (Fundulus heteroclitus)

Jessica S. Thompson, Cade P. Cobbs, Emma S. Dryden & Heather D. Harwell
More frequent storms due to climate change may impact estuarine species such as the mummichog (Fundulus hetereoclitus), an ecologically important salt marsh fish. This study investigated the effect of storm events and month on consumption of terrestrial insects by mummichogs in Hoffler Creek, Portsmouth, VA, as well as the effect of storms on consumption of major categories of benthic prey. Samples were taken monthly in the summers of 2017 and 2019. Additional paired samples were...

Camera trap survey suggests forestry and prescribed burns attract wildlife, but may not enhance diversity

Melissa S. Vilgats, Ryan Ott & Stephanie S. Coster
This study explored whether habitat management techniques such as forest thinning and burning promoted biodiversity. Fifteen camera trap stations were established at Fort A.P. Hill in Bowling Green, VA across forest stands with low, medium, and high basal area. Camera traps were deployed for a total of 532 trap nights, and trap success and species diversity were calculated using Shannon’s index. At each site, the distance to trafficable roadways and water sources, vegetation composition, and...

Identification of Planktothrix (Cyanobacteria) Blooms and Effects on the Aquatic Macroinvertebrate Community in the Non-Tidal Potomac River, USA

Joshua Henesy, Jennifer L. Wolny, John E. Mullican, Detbra S. Rosales, Joseph S. Pitula & Joseph W. Love
Using transverse cross-sectional transects, a survey of 31 km of the non-tidal Potomac River was conducted from White’s Ferry, Virginia, to Brunswick, Maryland, USA, between June and September in 2013 through 2015 to assess a recurring benthic cyanobacteria bloom. Abundant benthic cyanobacteria blooms were detected during the 2014 and 2015 sampling seasons and the primary taxon was identified morphologically and molecularly as Planktothrix cf. isothrix. When present, P. cf. isothrix blooms were concentrated from river...

Survival of Enterococcus faecium in turkey litter under different temperature and moisture combinations

Steven G. McBride, Benjamin Holland, Pradeep Vasudevan & Joanna B. Mott
Untreated poultry litter introduces a substantial load of fecal pathogens to the environment, impacting agriculture, public health and ecosystem function. There is substantial evidence that temperature and moisture are the primary drivers of fecal bacteria survival across ecosystems. However, both temperature and moisture effects have been shown to be modulated by the matrix in which the fecal bacteria are living. This context dependence highlights the importance of understanding fecal bacteria survival in a variety of...

Public Goods From Private Data: An Effectiveness and Justification Dilemma for Digital Contact Tracing

Andrew Buzzell
Debate about the adoption of digital contact tracing (DCT) apps to control the spread of COVID-19 has focussed on risks to individual privacy. This emphasis reveals significant challenges to ethical deployment of DCT, but generates constraints which undermine justification to implement DCT. It would be a mistake to view this result solely as the successful operation of ethical foresight analysis, preventing deployment of potentially harmful technology. Privacy-centric analysis treats data as private property, frames the...

Estimated 2020 CO2 Emission Reductions in Virginia’s Transportation Sector from COVID-19

Eden E. Rakes, Pamela Grothe & Jeremy Hoffman
The initial lockdown phase of the COVID-19 pandemic presented an unfortunate opportunity to observe how abrupt, large-scale changes in traffic volume can reduce greenhouse gas emissions. This study explores how carbon dioxide (CO2) emissions from Virginia’s transportation sector may have been affected by the changes in activity stemming from COVID-19 to inform more carbon-neutral policies as the state recovers from the economic downfall. Emission savings were calculated by multiplying the percent change from 2019 to...

Summer Food Habits of Myotis leibii in the Central Appalachians Ecoregion and Comparison to Similar Studies

John O. Whitaker, Virgil Brack & James D. Kiser
Food habits of Myotis leibii, Eastern Small-footed Myotis, were studied during summer in the Central Appalachians Ecoregion. Moths were 70.0% of the diet by volume and were in 97.7% of samples (percent frequency). Beetles, flies, and spiders comprised much of the remaining diet. Percent volume and percent frequency metrics produce similar results. These data and past studies indicate this bat eats a relatively low-diversity diet centered on terrestrial-based arthropod prey across a broad geographical area,...

Habitat Partitioning and Associated Morphological Differences Among Three Species of Catostomidae (Teleostei: Actinopterygii) in the South Fork Roanoke River, Virginia

Steven L. Powers & Dakota R. Spruill
The upper Roanoke River has 11 species of Catostomidae including Moxostoma ariommum, Bigeye Jumprock; Moxostoma cervinum, Blacktip Jumprock; and Thoburnia rhothoeca, Torrent Sucker. Resource partitioning appears to be a key component of maintaining diverse fish assemblages with habitat and food partitioning cited as especially important in communities containing members of the same family. The diets of these species have been documented in previous work revealing only modest differences among them. Snorkeling observations and subsequent quantification...

Registration Year

  • 2022
  • 2021

Resource Types

  • Journal Article


  • University of Maryland Eastern Shore
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